The LCD screen size refers to the size of the LCD screen, the unit is generally expressed in inches. Just like watching DVD on TV at home, the visual effect of the large screen is definitely better than that of a small screen, no matter it's a small OLED display or small LCD display. As a portable product, we should not only consider the size of the screen but also the weight of the product, because the screen is large, the weight and volume will naturally increase, which will affect the portability. At the same time, with the increase of the LCD screen, the price of products will also rise, which may affect the promotion of products. Therefore, when choosing the size of the LCD screen, we should not only consider the comfort of use, but also consider the portability and price.
There are some common LCD screens and OLED displays. For example, TFT is the abbreviation of "thin film transformer", also known as "true color". It belongs to the active matrix LCD screen. It is composed of thin-film transistors. Each LCD pixel is driven by thin-film transistor. Behind each pixel, there are four independent thin-film transistors driving the pixels to emit color light, which can display the true color of 24bit color depth. In terms of resolution, the maximum TFT LCD screen can reach uxga (1600 × 1200). TFT arrangement has memory, so the current will not return to its original state immediately after the current disappears, thus improving the shortcomings of STN LCD screen flicker and blur, effectively improving the effect of LCD displaying dynamic pictures, and the ability to display static pictures is more prominent. The Dragon point of TFT liquid crystal screen is that the response time is shorter than the effect, and the color is gorgeous, so it is widely used in pens Record on the computer and DV, DC. The disadvantage of TFT LCD is that it consumes more power and costs more.OLED (Organic Light Emitting Display) is different from the traditional liquid crystal display. It does not need a backlight, but uses a very thin organic material coating and glass substrate. When there is an electric current passing through, these organic materials will emit light, so its perspective is very large The content on the screen can be seen clearly in all directions, and can be made very thin. Moreover, OLED display can save energy significantly, which is known as "dream display". Now, various small OLED display sizes are widely used, including 0.42", 0.49", 0.66" , etc.